KR870007536A - Plate-like barium ferrite particles and method for producing same - Google Patents

Plate-like barium ferrite particles and method for producing same Download PDF

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Publication number
KR870007536A
KR870007536A KR870000751A KR870000751A KR870007536A KR 870007536 A KR870007536 A KR 870007536A KR 870000751 A KR870000751 A KR 870000751A KR 870000751 A KR870000751 A KR 870000751A KR 870007536 A KR870007536 A KR 870007536A
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South Korea
Prior art keywords
iii
plate
ferrite particles
barium ferrite
producing same
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KR870000751A
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Korean (ko)
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노리미찌 나가이
마사오 기야마
도시오 다까다
가쯔노리 후지모또
야스따까 오따
Original Assignee
마쓰이 고로
도다 고교 가부시끼가이샤
오까도 히로시
자이단 호진 세이산 가이하쯔 가가꾸 겐뀨쇼
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Publication of KR870007536A publication Critical patent/KR870007536A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/009—Compounds containing, besides iron, two or more other elements, with the exception of oxygen or hydrogen
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70678—Ferrites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/30—Three-dimensional structures
    • C01P2002/32—Three-dimensional structures spinel-type (AB2O4)
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Power Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Composite Materials (AREA)
  • General Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

내용 없음No content

Description

판상(板狀) 바륨 페라이트 입자 및 그 제조방법Plate-like barium ferrite particles and method for producing same

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 1 도는 Fe(Ⅲ)을 기준으로 하여 7.86원자%의 Co를 첨가하는 경우에 있어서 Co에 대한 Ti의 첨가비(몰비)와 제조된 판상 바륨 페라이트 입자들의 입도 사이의 관계를 도시한 것임.FIG. 1 shows the relationship between the addition ratio (molar ratio) of Ti to Co and the particle size of the plate-shaped barium ferrite particles in the case of adding 7.86 atomic% Co based on Fe (III).

제 2 도 및 3도는 실시예 1 및 비교예 1의 수용액으로부터 각각 제조한 판상 바륨 페라이트 입자들의 입자 구조에 대한 전자 현미경사진(×100,000)임.2 and 3 are electron micrographs (× 100,000) of the particle structure of the plate-shaped barium ferrite particles prepared from the aqueous solutions of Example 1 and Comparative Example 1, respectively.

Claims (2)

0.03㎛ 이상 0.1㎛ 이하의 평균 입경을 갖고 하기 일반식(Ⅰ)로 표시되는 판상 바륨 페라이트 입자:Plate-shaped barium ferrite particles having an average particle diameter of 0.03 µm or more and 0.1 µm or less and represented by the following general formula (I): BaO·n[Fe1-x-yCoxTiy)2O3-x+y]………………………………(Ⅰ)BaOn (Fe 1-xy Co x Ti y ) 2 O 3-x + y ]... … … … … … … … … … … … (Ⅰ) 여기서,here, x 및 y는 독립적으로 0.02 내지 0.12이고,x and y are independently 0.02 to 0.12, n은 4 내지 7이며;n is 4 to 7; Fe(Ⅲ)에 대한 Co의 원자비는 0.02 : 1 내지 0.13 : 1이고,The atomic ratio of Co to Fe (III) is 0.02: 1 to 0.13: 1, Co에 대한 Ti의 몰비는 0 이상 0.8이하임.The molar ratio of Ti to Co is from 0 to 0.8. 현탄액내에서 Fe(Ⅲ)의 양에 대한 Co양의 원자비가 0.02 : 1 내지 0.13 : 1이며, Co에 대한 Ti의 몰비가 0이상 0.8 이하인, Fe(Ⅲ), Co(Ⅱ), Ti(Ⅳ) 및 Ba 이온을 함유하는 수산화철(Ⅲ)의 염기성 수성 현탁액을 120 내지 33℃의 온도에서 오토클레이브 처리해서 평균 입경을 0.03㎛ 이상 0.1㎛ 이하로 조절하는 단계를 포함하는 하기 일반식(Ⅰ)로 표시되는 판상 바륨 페라이트 입자의 제조방법 :The atomic ratio of Co to the amount of Fe (III) in the suspension is 0.02: 1 to 0.13: 1 and the molar ratio of Ti to Co is from 0 to 0.8, wherein Fe (III), Co (II), Ti (IV). ) And a basic aqueous suspension of iron (III) hydroxide containing Ba ions at a temperature of 120 to 33 ° C. to adjust the average particle size to 0.03 μm or more and 0.1 μm or less, using the following general formula (I). Method for preparing plate-shaped barium ferrite particles: BaO·n[Fe1-x-yCoxTiy)2O3-x+y]………………………………(Ⅰ)BaOn (Fe 1-xy Co x Ti y ) 2 O 3-x + y ]... … … … … … … … … … … … (Ⅰ) 여기서,here, x 및 y는 독립적으로 0.02 내지 0.12이고; n은 4 내지 7이며; Fe(Ⅲ)에 대한 Co의 원자비는 0.02 : 1 내지 0.13 : 1이고; Co에 대한 Ti의 몰비는 0 이상 0.8 이하임.x and y are independently 0.02 to 0.12; n is 4 to 7; The atomic ratio of Co to Fe (III) is 0.02: 1 to 0.13: 1; The molar ratio of Ti to Co is 0 or more and 0.8 or less. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR870000751A 1986-01-29 1987-01-28 Plate-like barium ferrite particles and method for producing same KR870007536A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP61018833A JPS62176921A (en) 1986-01-29 1986-01-29 Preparation of fine powdery platy barium ferrite
JP18833 1986-01-29

Publications (1)

Publication Number Publication Date
KR870007536A true KR870007536A (en) 1987-08-20

Family

ID=11982563

Family Applications (1)

Application Number Title Priority Date Filing Date
KR870000751A KR870007536A (en) 1986-01-29 1987-01-28 Plate-like barium ferrite particles and method for producing same

Country Status (5)

Country Link
US (1) US4752407A (en)
EP (1) EP0231128B1 (en)
JP (1) JPS62176921A (en)
KR (1) KR870007536A (en)
DE (1) DE3774584D1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4828916A (en) * 1986-12-27 1989-05-09 Toda Kogyo Corporation Plate-like magnetoplumbite type ferrite particles for magnetic recording and magnetic recording media using the same
US5075169A (en) * 1988-06-08 1991-12-24 Toda Kogyo Corp. Plate-like composite ferrite particles for magnetic recording and process for producing the same
JP2644322B2 (en) * 1989-03-31 1997-08-25 株式会社東芝 Magnetic recording media
JPH0672018B2 (en) * 1989-04-22 1994-09-14 戸田工業株式会社 Plate-shaped composite ferrite fine particle powder for magnetic recording and method for producing the same
JP5390756B2 (en) * 2007-08-02 2014-01-15 関東電化工業株式会社 Method for producing flaky Ba ferrite fine particles

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5941806A (en) * 1982-08-31 1984-03-08 Toda Kogyo Corp Manufacture of tabular ba ferrite particle powder for magnetic recording
JPS59161002A (en) * 1983-02-05 1984-09-11 Toda Kogyo Corp Laminar ba ferrite fine particle for magnetic recording and manufacture thereof
US4493874A (en) * 1983-03-08 1985-01-15 Tokyo Shibaura Denki Kabushiki Kaisha Production of a magnetic powder having a high dispersibility
JPS59175707A (en) * 1983-03-26 1984-10-04 Toda Kogyo Corp Flat ba-ferrite fine particle for magnetic recording and manufacture thereof
JPS6081804A (en) * 1983-10-12 1985-05-09 Toda Kogyo Corp Hexagonal plate type ba ferrite fine-grained powder for magnetic recording and manufacture thereof
JPS6095902A (en) * 1983-10-31 1985-05-29 Toda Kogyo Corp Manufacture of tabular ba ferrite corpuscular powder for magnetic recording
JPS60137002A (en) * 1983-12-26 1985-07-20 Toda Kogyo Corp Manufacture of tabular ba ferrite fine particle powder for magnetic recording
US4584242A (en) * 1984-05-31 1986-04-22 Toda Kogyo Corp. Plate-like barium ferrite particles for magnetic recording and process for producing the same

Also Published As

Publication number Publication date
US4752407A (en) 1988-06-21
EP0231128A2 (en) 1987-08-05
EP0231128A3 (en) 1988-09-21
EP0231128B1 (en) 1991-11-21
JPS62176921A (en) 1987-08-03
DE3774584D1 (en) 1992-01-02

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